Automatic double buck press



mw m, 133.. E. DAWS L94042 AUTOMATIC DOUBLE BUCK PRESS Original Filed May 22. 1930 3 Sheets-Sheet l IH 'Hill Dec. 19, 1933. E DAVlS 1,940,642

AUTOMATIC DOUBLE BUCK PRESS Original Filed May 22. 1930 3 Sheets-Sheet 2 A TTORNEYS AUTOMATIC DOUBLE BUCK PRESS original Filed May 22. 195o 5 sheets-sheet 3 ATTORNEYS, l

Patented Dec. 19, 1933 PATENT OFFICE AUTOMATIC DOUBLE BUCK Pmiss Ernest Davis, Syracuse, N. Y., assignor to The Prosperity Company, Inc., Syracuse, N. Y., a

corporation of New York Application May 22, 1930, Serial No. 454,798 Renewed April 5, 1933 11 Claims.

`'I'his invention relates to pressing machines such as garment and ironing or laundry presses and relates particularly to a garment or ironing press having a plurality of bucks.

An object of the inventionis to provide a novel pressing machine having two or more bucks, one of which may be brought into cooperative relation with a pressing head for pressing a garment 'rvhilre the operator arranges the work on another A further object of the invention is to provide novel power means for swinging a buck away from cooperative position with respect to a pressing head, and at the same time move another buck into such cooperative position.

Aiurther object of the invention is to provide.

novel power means for swinging a buck into and means for bringing said head and buck into pressing relation, the two power means being so related that it is impossible to operate .both means at the same time, thereby causing damage to the mechanism.v n

A further object ofthe invention is to provide novel power operating means for swinging a buck into position under a pressing head and automatically raising said buck into pressing contact against the head when it swings into proper position under the head.

Further objects and advantages of the invention will be pointed out andwill become apparent as the description proceeds.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views. y

Figure 1 is a diagrammatic plan view showing a double buck pressing machine to which my invention is applied.

Figure 2 is a side elevation, partly in section, of the machine shown in Figure 1.

Figure 3 is a fragmentary plan view, partly in section, of the operatingvmechanism of the machine shown in Figures l and=`2.

, Figure 4 is a fragmentary sectional view of the operating mechanism shown in Figure 3 together with certain ,parts of the control mechanism.

Figure 5 is a detail sectional view of a part of the driving mechanism shown in Figure 4.

Figure 6 is a diagrammatic showing of the operating mechanism of a pressing machine of porting means carried by a cross frame 11. The 05 connection of the head 10 to the -cross frame 11 is preferably of an/"adjustable type such as a screw member 12 which may be locked in adjusted position 'bya' lock nut 13.

The cross frame 11 is supported on suitable frame standards 14 rising from the lower bed .frame 15 of the pressing machine.

out of position under a pressing head, and power:

A supporting frame 16 is revolvably mounted and preferably on one of the'frame standards 14 and bucks 17 land 18 are carried by pins- 19 75 which arejslidably mounted in the supporting frame 16, to permit the bucks 17, 18 to rest on the supporting frame 16 and to have a guided vertical movement relatively to the supporting frame. A shoulder 16a formed on the supporting 30 frame 16 contacts with a pin 16h. 'I 'he pin 16b is rigidly secured 1 to the frame standard 14 and limits the rotary motion of the supporting frame 16 about the frame standard 14 to 180 as will be apparent from the illustration in Figures 1 and 2. 85

The bucks 17, 18 are mounted at the proper distances from the frame standard 14 `so that either buck 17 or- 18 may be swung into position under the pressing head 10 and when pressure is applied to the lower ends of the pins 19, the

buck may be raised against the head4 10 to close the press. As before stated, .the head 10 may be adjusted to provide suitable clearance between it and the bucks 17 and 18 when the bucks are in 95 lowered position.

The supporting frame 16 is attached by suitable means such as a set screw 20 to a pinion gear 21 rotatablyV mounted on the fratrie standard 14.

The pinion gear 21 is rotated byV suitable means such as a rack 22 which is held in contact with 100 the pinion gear by means of asuitable bearing member 23, as shown in Figure 3. The rack 22 is directly connectedwith a piston rod 24 of a piston 25 which operates in a` power cylinder 26.

The cylinder and piston form a doubleiacting fluid motor by which the rack 22 may be moved by power in either direction to revolve or oscillate the pinion gear 21 andthe bucks 17 and 18 to bring the bucks alternately beneath the head 10.

\Referrin g particularly to Figure 2, a pressure of tu plate 30 is mounted on a push rod 31 beneath the head 10 and spaced therefrom far enough so that the bucks 17 and 18 can pass between the head 10 and the pressure plate 30. The pressure plate 30 when raised contacts with the lower ends of the pins 19 carried by the bucks 17 and 18 to raise the buck then under the head against the head 10 to close the press.

The power means for raising the push rod 31 is illustrated in Figure 4. A cam 33 operates a Asuitable follower, such as the roller 34, which is connected to the lower end of the push rod 31. The cam 33 is rigidly mounted on a shaft 35 which is rotatably mounted in suitable bearing standards 36 which are secured to the base frame of the pressing machine. Crank members 37 and 38 keyed, or otherwise rigidly attached, to the shaft 35 are located in angular relation to one another and to the cam 33 such as illustrated in Figure 4.

Afluidmotor 39 havingapiston 40 operating in a cylinder 4l supplies power through the piston rod 42 which is pivotally connected at 43 to the crank 38 to operate the cam 33 and thereby raise the push rod 31. A tension spring 44 connected at one end to the crank 37 and anchored at the other end to the base frame of the pressing machine rotates the shaft 35 to return the cam 33 and fluid motor 39 to their original or initial position whereupon the push rod 31 descends by gravity to its low position.

A slot 45 in the push rod 31 acts as a cam surface for a follower 46 which operates one 'of the valves in the control mechanism in a manner later to be described.

A control bar 50 is slidably mounted in a guide bearing 51 supported on the cylinder 26. 'Ihe control bar 50 is rigidly connected to the rack 22 through the upstanding arm 52 so that as the rack moves back and forth, the control bar 50 will move in the same reciprocating manner. Latch members 53 located adjacent each end of the control bar 50 operate the lever 54 to operate a valve of the control mechanism in a manner hereinafter to be described.

Stop members 55 located at spaced apart points on the rack 22 strike against the lever 56 of the shock absorber 56a' to stop the rack 22 and its associated mechanism when the rack reaches either end of its stroke, at which time one of the vbucks will be in position under the pressing head.

Referring to Figure 6, the pressing machine is operated by two manual push buttons 60, 61. The push button 60 operates the valve mechanism in the valve chamber 63. Thismechanism consists of an intake valve 64 and exhaust valve 65 which are connected by the' stem 66. A spring 67 holds the valves in such position that the intake valve 64 is normally closed, andthe exhaust valve 65 normally open. The exhaust port from the valve chamber is designated generally as 68. A valve stem of the exhaust Valve 65 extends through the valve casing and is operated by a rocker arm 71. The rocker arm 71 is in turn operated from the bell crank 72 which contacts with the push button 60. This structure comprises an operator actuated valve means connected with one end of the double acting motor 26.

To lock or hold the valves in operated position, a conduit 62 connects the interior of the valve casing 63 with a diaphragm chamber 73. Pressure behind the diaphragm in this chamber holds the pin 74 out against the rocker arm 71 thus locking or holding the valves in operated position. The diaphragm with its associated mechanism constitutes holding means for retaining each motor in operated position as -well as holding means for retaining the valve means in its operated position.

The push button 61 operates the valve mechanism in the valve chamber 80. Since the valves and locking means in this valve chamber are identical with that in the valve chamber 63, the description will not be repeated.

A valve casing 81 is provided with an exhaust valve 82 which is normally closed under pressure of the spring 83. The stem 84 of this exhaust valve contacts with the lever 85 and when the lever moves in a clockwise direction, the stem 84 is pushed to the right to open the valve. 'Ihe stem 84 being much smaller in diameter than its bearing through the valve casing, the bearing acts as an exhaust port. The lever 85 is connected through members 86, 87 with the bell crank 72 so that the exhaust valve 82 will be opened when the bell crank 72 is moved and when one of the operator actuated valve means is operated by depression of the push button 60. The valve chamber 90 also contains a similar exhaust valve operated in identical manner through the members 86, 87. Exhaust valves or releasing means in valve chambers 91 and 92 are operated upon depression of the push button 61 in exactly the same manner as described above in connection with the valves in the valve chambers 81 and 90. The exhaust valves comprise releasing means for the holding means.

A valve chamber 95 contains an intake valve 64', an exhaust valve 65 rigidly connected to the stem 66 and held in normal position by a spring 67 so that the intake valve is normally closed and the exhaust valve normally open. The valve stem 70 of the exhaust valve 65 is secured at its end to the roller 46 which operates on the push rod 31. When the push rod is in lowered position, such as shown in Figure 6, the intake valve 64 is open and the exhaust valve 65 is closed. When the push rod 31 rises under inuence of the cam 33, the slot 45 comes under the roller 46 and the roller 46 is pushed into the slot under influence of the spring 67, so that the intake valve 64 closes, and the exhaust valve 65 opens. Although the normally open valve means 95 is controlled by the push rod 31, it is clear that any part of the mechanism moved by the motor 39, including the motor, may be used to control the valve means 95.

The valve chamber 96 contains an intake valve 64 and exhaust valve 65 rigidly connected by the stem 66. A spring 67 normally holds the intake valve 64 in closed position, and the exhaust valve 65 in open position. The valve stem 70 of the exhaust valve 65 contacts with a roller 97 mounted on the lever 54. The bottom of the stem 70 vwhich contacts with the roller 97 is of such contour, as for example, hemispherical, that when the lever 54 is rocked, the roller 97 will move to the other side of the valve steml70 thereby thrusting the valve stem 70 upward during such movement and momentarily closing the exhaust valve 65 and opening the intake valve 64.

'I'he latch members 53 are pivoted at 98 to the control bar 50 and are normally held in raised position by the springs 99. The latch members 53 are mounted on the control vbar 50 with their raised ends toward one another. It is obvious from the illustration of these latch members 53 in Figures 6 and 7, that they will not operate the lever 54 to rock it about its pivot point 100 except when the latch member approaches the lever 54 its pivot point until it contacts with the other lever 54.

The valve chamber 96 or particularly the conduit 115 is provided with a check valve 101 which prevents the fluid from flowing out from this valve chamber orthe conduit 115 through the exhaust when the 'valve means 96 returns to initial position.

The valve chamber 102 contains the same valve mechanism as described in connection with valve chamber 63. The diaphragm chamber locking arrangement is also the same, with the exception that the fluid supply for holding the diaphragm in locking position is obtained from an outside source instead of through a conduit in the valve casing itself as was the case with valve casing 63. The check valve 101 is provided.

to keep fluid pressure within the pressure operated means represented by the diaphragm and diaphragm chamber 73. The valve 96-with its operating mechanism and valve 102 and its diaphragm or pressure operated means constitute automatic valve means which are operable upon the double acting motor 26 reaching the end of its stroke in each direction for automatically applying pressure to the pressure operated means. This structure also comprises means which are automatically operated upon the double acting motor 26 reaching the end of its stroke in each direction for operating the aforesaid valve means to automatically operate the rst motor 39.

The operation of the pressing machine is as follows;

Air enters through a supply pipe and passes into the valve chamber 95 and the pipe 106. If the press is in open position, the push rod 31 will be down and will occupy the position shown in Figure 6; the roller 46 will be out of the slot 45; the intake valve 64 in valve chamber 95 will be open; and the exhaust valve 65 closed, as illustrated in Figure 6. Air may then pass through the valve chamber 95 and pipe 107 to the valve chambers 63 and 80. 'I'he intake valves 64 in these valve chambers are normally held closed as previously described. If the push button 60 is depressed, the bell crank 72 will rock to move the rocker arm 71 to operate the valve stem 70 to close the exhaust valve 65 and open the intake valve 64. Air from the pipe 107 may then pass through the valve casing 63 into pipe 108 to supply 'air to the buck swinging motorand operate the piston 25 in the cylinder or motor 26.

Air may also pass through the conduit 62 in the valve casing 63 to the diaphragm chamber 73 to force the pin 74 to the left and lock the valves in operated. position as previously described. Air may pass from the diaphragm chamber 73, through the pipe 109, to the valve chamber 92, but if the push button 61 is not depressed, the exhaust valve in valve chamber 92 will be closed and it will be impossible for air to escape through the pipe 109.

The piston 25 and rack 22 move to the left rotating .the pinion gear 21 in a counter-clockwise direction to swing the buck 1li-out from under the pressing head 10, and swing the buck l17 into the position previously occupied by the buck 18.

-end of the cylinder 26 to move the piston 25 As the piston 25 and rack 22 move to the left, the control bar 50 will also move to the left. The left hand latch member 53 will pass under the lever 54 and will be depressed against the. compression spring 99 without moving the lever 54, as previously described. When the piston 25 nears the end of its stroke, the right hand latch member 53 of the control bar 50 will come in contact with the lever 54 to rock the same about its pivot point 100 and cause the roller 97 to raise the valve stem 70 to operate the valves in the valve casing 96 as will soon be described.

As thepiston 25 nears the left hand end of the cylinder, the stop' member 55 on the rack 22 (see Figure 3) will strike the lever 56 of the shock absorber 56a to cause the mechanism to come to a stop.

1f the push button 61 only is depressed, air is supplied through the pipe to the left hand 95 and rack 22 to the right to rotate the pinion gear 21 in a clockwise direction.

Thus, one of the push buttons rotates the supporting frame 16 to the right, and the other rotates it to the left. If both push buttons are depressed at the same time, the exhaust valves in valve casings 90, 92 will be open and no air will be .supplied to the cylinder 26 through the pipe 108 or 110 since it can escape through the pipes 109 and 112, and valve casings 90 and 92.

When the piston 25 and rack 22 have reached the end of a stroke and operated the valves in valve casing 96 to momentarily open the intake valve 64 and close the exhaust valve 65, a small amount of air will pass through the check valve 113 101 and pipe 115 to the diaphragm chamber of the valve casing 102 and will be pocketed in the diaphragm chamber to hold the valves 64 and 65 in operated position. This supply of air t0 the diaphragm chamber of the valve casing 102 115 is suilicient to cause the diaphragm and pin 74 to operate the rocker arm 71 to open the intake valve 64 and close the exhaust valve 65. Air from the pipe 106 may then pass through the valve chamber 102 and into the pipe 116 to operate the fluid motor 39 and rotate the cam 33 to close the press in the manner previously de-V scribed. 'Ihe closing of the press is therefore. automatically inaugurated by operation of the lever 54 as the piston 25 of the buck frame swing- 125 ing motor reaches the end of its stroke.

As the push rod 31 begins to raise to close the press, the roller 46 will drop into the slot 45, thus permitting the spring 67 in valve casing 95 to` close the intake valve 64 and cut off the supply of air to the pipe 107. With the air supplied to this pipe 107 cut off, it is impossible to supply air to the cylinder 26 by depressing either push button 6,0 or 61. Thus, a careless operator can not cause the bucks to swing after power has been applied to close the press.

When the press is closed, the push buttons 60, 61 may be used to again open the press since depression of one of these push buttons 60, 61 causes the exhaust valves in valve casings 81, 91 respectively to open, thereby permitting escape of the air in the diaphragm chamber of valve casing 102, through the pipe 115. The spring 67 in the valve casing 102 will operate, as soon as the air in the diaphragm chamber is per- ,1 mitted to escape to close the intake valve 64 and open the exhaust valve 65, thus permitting air from the cylinder 41 of the motor 39 to escape through the pipe 116 and exhaust. port 68 of the valve casing 102.

It will thus be apparent that I have provided an automatic double buck press in which the operator may swing the supporting frame for the bucks to the right with one push button, and to the left with another push button. The control parts are so related that no damage will be caused by depression of both push buttons at the same time and so that it is impossible to operate the second and double acting motor 26 when the pressing or first motor 39 is operated and, similarly, it is impossible to operate the pressing motor 39 when the double acting or swinging motor is being operated.

I have further provided automatic power means for closingthe press when a buck reaches the proper position under the head, the control means being such that it is impossible for a careless operator to apply power to turn the supporting carriage for the bucks when the press is closing, or in closed position. This safety feature is due to the fact that when the press is closing, or has reached closed position, the control means for swinging theA supporting carriage for the bucks are rendered inoperative to control the motor for the supporting carriage, as previously described. The operating mechanism further provides a simple and compact arrangement of control members, which is highly emcient in use.

While I have illustratedth preferred embodiment of my invention, various changes and modications may be made in the detailed arrangement without departing from the spirit of the invention as set 'forth in the appended claims.

What I claim is:

1. A pressing machine including in combination a pressing head; a plurality of bucks; a frame carrying the bucks and revolvable to the right and left to move the respective bucks into operative position with respect to the pressing head; power actuating means for said frame including a reversible fluid operated motor means; means to control the iow of working fluid to the motor means to revolve the frame to the right; other means tocontrol the ow of working fluid to the motor means to revolve the frame to the left; locking means for each control means; and means operated by each control means Afor releasing the locking means of the other control means.

2. A pressing machine including in combination, a main frame; a pressing head mounted on the main frame; a plurality of bucks; a buck supporting member rotatably mounted on the main frame; motor means connected to the buck supporting member to rotate said member to successively bring the bucks into a position under the pressing head; operator-operated control means for said motor means to supply power thereto; a'. second motor means coacting with the bucks when in position under the head to raise the buck into contactwith the pressing head; control means for said second motor means to supply power thereto and operated automatically when a buck reaches its correct position under the the pressing head; and means connected to and operated by the second motor means to render the operator-operated control means forl the rst power means ineffective upon operation of the second power means.

3. A pressing machine `including in combination, a main frame; a pressing head mounted on the main frame; a pair of bucks; a buck supporting member rotatably mounted on themain frame; reversible motor means for moving the tion; and connections between the first and the second operator-operated control means to cut off the supply of power to the motor means upon operation of the both control means.

4. A pressing machine including in combination, a main frame; a pressing head mounted on the main frame; a pair of bucks; a buck supporting member rotatably mounted on the main frame; reversible motor means for moving the supporting member in one direction to bring one buck into position under the pressing head and for moving the supporting member in the other direction to bring the other buck in position under the pressing head; a first operator-operated control means to supply power to the motor means to move the supporting member in one direction; a second operator-operated control means to supply power to the motor means to,

move the supporting' member in the other direction; and connections between the rst and the second operator-operated control means to cut oil the supply of power to the motor means upon operation of the both control means, a second motor means coacting with the bucks in a position under the head to raise the respective buck to contact with the pressing head; control means for said second motor means to supply power thereto and operated automatically when a buck reaches its correct position under the pressing head; and means connected to and operated by the second motor means to render the operator-operated control means for the rst power means ineffective upon operation of the second power means.

5. A motor means for a garment or ironing press comprising a rst motor, a. second, double acting motor, operator actuated valve means operatively connected with one end of the double acting motor, operator actuated valve means operatively connected with the Aother end of the double acting motor, a normally open valve means connected with both of the operator actuated valve means and adapted to be connected with a source of uid supply, valve means controlling the first motor, and means controlled by the movement of the first motor from its initial position to close the normally open valve means.

6. A motor means for a garment or ironing press comprising a first motor, a second and double acting motor, operator actuated valve means g operatively connected with one end of the double acting motor, operator actuated valve means operatively connected with the other end of the double acting motor, a normally open valve means connected with both of the operator actuated valve means and adapted to be connected with 7. A motor means for a garment or ironing remesa press comprising a iirst motor, a second and' double acting motor, operator actuated valve means operatively connected with one end of thev double acting motor, operator actuated valve means operatively connected with the other end of the double acting motor, holding means for retaining each motor in operated position, releasing means operable upon actuation of one operator actuated valve means to release the holding means for the rst motor and the second motor, a normally open Valve means connected with both of the operator actuated valve means and adapted to be connected with a source of iiuid supply, valve means controlling the first motor, and means controlled by the movement of the rst motor from its initial position to close the normally open valve means.

8. A motor means for a garment or ironing press comprising a first motor, a second and double acting motor, operator actuated valve means operatively connected With one end of the double acting motor, operator actuated valve means operatively connected with the other end of the double acting motor, holding means for each valve means to retain the same in operated position, releasing means for each holding means, means connecting the releasing means for the iirst motor and for one of the operator actuated valve means with the other operator actuated valve means so that operation of the latter will operate the aforesaid release means, a normally open valve means connected with both of the operator actuated valve means and adapted to be connected with a source of iiuid supply, valve means controlling the rst motor, and means controlled by the Imovement of the first motor from its initial position to close the normally open valve means.

9. A- motor means for a garment or ironing press comprising a first motor, a second and double acting motor, operator actuated valve means operatively connected with one end of the double acting motor, operator actuated valve means operatively connected with the `other end of the double acting motor, holding means for retainingeach motor in operated position, releasing means operable upon actuation of one operator actuated valve means to release the holding means for the lirstmctor and the second motor, a normally openvalve means connected with both oi the operator actuated valve means and adapted to be connected with a lsource of fluid supply, valve means controlling the first motor, means automatically operated upon the double acting motor reaching the end ot its stroke in each direction for operating the aforesaid valve means to automatically operate the first motor, and means controlled by the movement of the rst motor from its initial position to close the normally open valve means.

l0. A motor means for a garment or ironing press comprising a rst motor, a second and double acting motor, operator actuated Valvev means operatively connected with one end of the double acting motor, operator actuated valve means operatively connected with the other end of the double acting motor, holding means for each v'alve means to retain the same in operated position, releasing means or each holding means, means connecting the releasing means `for the first motor and for one of the operator actuated valve means with the other operator actuated valve means so that operation of the latter will operate the aforesaid release means, a normally open valve means connected with both ofthe operator actuated valve means and adapted to be connected with a source of uid supply, valve means controlling the rst motor, means automatically operated upon the double acting motor reaching the end of its strolreA in each direction for operating the aforesaid valve means to automatically operate the iirst motor, and means controlled by the movement of the first motor from its initial position to close the normally ppen valve means.

1l. A motor means for a garment or ironing. press comprising a rst motor, a second and double acting motor, Ioperator actuated valve means operatively connected with one end of im the double acting motor, operator actuated Valve means operatively connected with the other end of the double acting motor, a normally open valve means connected `with both of the operator actuated valve means and adapted to be connected 11 with a source of duid supply, valve means controlling the rst motor, pressure operated means for actuating the aforesaid valve means, automatic valve means adapted to be connected with a source of iiuid pressure and operable upon the double acting motor reaching the end of its stroke in each direction for applying pressure to the pressure operated means, means to release the pressure operated means, and means controlled by the movement of the rst motor from its initial position to close the-normally open valve means.

ERNEST DAVlS. 

